Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/3e37a2b88f0e
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24962 from KevinGrandon/bug_1080283_notification_launch_app_wait

Bug 1080283 - Add wait in notification_launch_app_test

========

https://hg.mozilla.org/integration/gaia-central/rev/6f0feacc5ead
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1080283 - Add wait in notification_launch_app_test r=kgrandon
Bumping manifests a=b2g-bump